[Sidefx-houdini-list] How to scatter points based on a probability map

Phil Spicer PSpicer at bournemouth.ac.uk
Tue Jul 22 07:21:20 EDT 2008

Hi Jaideep,

Could you 'paint' the luminance map onto the geometry using the pic() or tex() function inside a Point SOP, and then use this colour information to drive the scatter attribute?

Kind regards,


-----Original Message-----
From: sidefx-houdini-list-bounces at sidefx.com [mailto:sidefx-houdini-list-bounces at sidefx.com] On Behalf Of Jaideep Khadilkar
Sent: 22 July 2008 12:15
To: Houdini Mail List
Subject: [Sidefx-houdini-list] How to scatter points based on a probability map


I want to scatter some points on a plane, depending on a density map or probability map. The map will be black and white, white is probability
1 and black probability 0. Now I want to know the method or algorithm to do this. I know that, we can use attribute in scatter sop, but the detail depends on the number of points in the source geometry. I want to do it using map.
Another method to do that is using fur sop, and keeping only the root points. But I want to use the method in my own HDK, so if you can provide the algorithm, I can code it.


      Explore your hobbies and interests. Go to http://in.promos.yahoo.com/groups/
Sidefx-houdini-list mailing list
Sidefx-houdini-list at sidefx.com

More information about the Sidefx-houdini-list mailing list